Power Source U1-35 (91-225) Compatible Replacement Battery 24.72 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Power Source U1-35 (91-225) Compatible Replacement Battery is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Volts & Amps
12 Volts | 35 AH
Terminal Type
Nut & Bolt
Power Source U1-35 (91-225) Replacement Battery — Compatible with Power Source U1-35 (91-225)
Restore dependable power with this Power Source U1-35 (91-225) replacement battery. Built to meet or exceed OEM SLA specifications, the SigmasTek replacement for the Power Source U1-35 (91-225) offers consistent, reliable performance for backup and primary power applications. Combining AGM technology with a sealed, maintenance-free construction, this high-performance battery is a practical, factory-fresh option for any system that requires 12-volt, 35 AH capacity.
Key Specifications
- Compatible Model: Power Source U1-35 (91-225)
- Replacement Brand: SigmasTek
- Battery Type: Rechargeable Sealed Lead Acid (SLA)
- Technology: Absorbent Glass Mat (AGM)
- Voltage: 12 Volts
- Capacity: 35 AH
- Terminal Type: Nut & Bolt
- Design: Maintenance-Free with Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
Benefits
Engineered as a long-lasting battery replacement, the Power Source U1-35 (91-225) unit uses AGM cells to deliver superior cycle life and resistance to deep discharge damage. Its durable construction makes it well-suited for repeated charge/discharge cycles and harsh environments, while the sealed, maintenance-free design keeps upkeep minimal. As a high-performance battery, it offers stable output that supports sensitive electronics, ensuring steady voltage under load.
Typical uses include UPS systems, emergency backup power, security systems, alarm panels, and portable power tools where a compact but robust 12V source is required. The nut & bolt terminals provide rock-solid electrical connections for fixed installations, reducing the risk of loose contacts during long-term service. Certified by U.L. and CE, the SigmasTek replacement meets recognized safety standards, and the included 1 year warranty adds an extra layer of assurance.
When you need a reliable replacement battery for the Power Source U1-35 (91-225), this SigmasTek option offers the performance and longevity to keep your equipment running smoothly. It’s a cost-effective way to restore full functionality while avoiding compatibility issues.
Don’t wait until a power failure—purchase the Power Source U1-35 (91-225) replacement battery today and enjoy dependable, long-lasting power backed by a one-year warranty.
Technical Specifications
Product Highlights
- Brand Replacement : Power Source U1-35
- Manufacturer: SigmasTek
- Product Type: SLA Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




